Guide for stamp-stems.



N0. 698,378.` Patented Apr. 22, |902.

D. C. DEMAREST:

GUIDE FUR STAMP STEMS.

(Application filed Apr. 5, 1901.)

(No Model.)

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UNITE STATES -AfrsNr Fries.

DAvrD o. DEMAREs'r, or ANGELS cAMP, CALIFORNIA.

GUIDE FOR STA-ivi P-STEMS.

SPECIFICATION forming partlof Letters Patent No. 698,378, dated April 22, 1902. Application tiled April 5, 1901.` Serial No.,54,556. (Nomodel.)

most nearly appertains to make, use, and prac;`

tice the same.

My invention relates to an improved guide device for the stems of stamps used in stam pbatteries, its object being to provide a simple construction that will permit any one of a series of stamp-stems to be removed from or replaced in the guide-frame without disturbing any of the other stems or parts of the battery.

It consists of a sectional tapering sleeve or shell which fits around the stamp-stem and which is fitted to seat itself in a tapering socket or opening in the guide-frame and in providing an opening in the guide-frame in front of the sleeve socket or opening through which the stamp-stem can be withdrawn and replaced laterally after the sleeve or shell is removed from its socket, all as hereinafter more fully described, referring to the accompanying drawings, in which-` Figure l is a front elevation of the guideframe and guides of a stamp-battery. Fig. 2 is a plan view of the guide-frame and guides. Fig. 3 is a sectional elevation of a guide sleeve or shell. Fig. 4 is a cross-section of one of the guide-sleeves. Fig. 5 shows the canvas lining.

Let Arepresent a casting, which is bolted in the usual way to the guide-girths of a battery-frame, so that it extends across above the stamp or line of stamps in the battery. This casting has as many openings B in its front portion as there are stamps in the battery, and they are located so that one of the openingswill be directly above each stamp and in line with its stem. These openings may be of any desired shape-round, square, or polygonal-although I prefer to make them circular in form, and they are madeslightly tapering from top -to bottom, their greatest diameter being at the top and their smallest diameter at the lower end of the opening. An

can be made in two or more longitudinal parts,

which are adapted to fit together. The ex `terior shape of this sleeve or shell corresponds with the form or shape of the openings B in the guide-frame, and it is correspondingly ta pered and of a size to enter, fit, and seat itself snugly in the opening. .The central opening of this sleeve or shell isof the proper size to fit the stam p-stexn when the sections are placed together around it. The sleeve or shell is then dropped into the tapering opening B in the guide-frame and seats itself in the opening, so as to form a fixed stationary guide for the stem. In order to insure a firm seating of the sleeve or 4shell in the opening, I wrap the exterior of the sleeve with a thickness of canvas or other fabric before dropping it into its socket, so that the canvas will form a cushion and increase the gripping friction between the metal joint. The exterior surface of the sleeve or shell and the interior surface of the socket or opening will usually be left in the rough state after casting, so that the sleeveor shell will be held more iirmly. In placing the sleeve in the socket care is taken to place the joints so that they will come opposite the solid metal of the socket and notopposite the opening C in front.

In order to provide a convenient means for removing the sleeve or shellfrom the socket, I cast a lugF on one of the parts of the sleeve, and this partpof the sleeve is placed in front, so that the lug will project through the opening C. By tapping upward on this lug with a hammer-'the tapering sleeve can be loosened from the socket when it is desired to remove the stem, and after the sleeve has been lifted clear of the opening its parts can be 4separated from the stem and the stem removed through the front opening or passage C.

The tapering sleeve or shell mightbe cast in a single piece; but for convenience I prefer to make it in sections. Grooves can be made in the central opening inthe sleeve or shell through which the stem passes for the IOC reception of a composition of graphite and oil or. other lubricant.

By this construction and arrangement the stem of any one of a series of stamps When Worn can be removed from its guide for repairs or a new guide substituted Without disturbing any other parts of the battery.

The device is extremely simple, and it contains no bolts, nuts, set-screws, or wedges.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is v A guide for battery-stamp stems consisting of a casting secured to the battery-frame above the stamp or line of stamps, and formed- With a tapering socket or opening through the DAVID C. DEMAREST.

Witnesses:

V. L. MARCHAL, A. S. RYLAND. 

